Dish-washing machines



July 29, 1969 u. BELAIEFF 3,458,136

DISH-WASHING MACHINES Filed March 7, 1967 2 Sheets-$heet 1 INVENTOR.

JAMES BELAIEFF AGENT July 29, 1969 Y J. BELAIEFF 3,458,136

DISH-WASHING MACHINES Filed March '7, 1967 I 2 Sheets-Sheet 2 FIG.2

INVENTOR.

JAMES BELAIEFF AGEN United States Patent 3,458,136 DISH-WASHING MACHINESJames Belaietf, Geneva, Switzerland, assignor, by mesne assignments, toU.S. Philips Corporation, New York, N .Y., a corporation of DelawareFiled Mar. 7, 1967, Ser. No. 621,296 Claims priority, applicationFrance, Mar. 9, 1966,

Int. Cl. Bb 3 /06, 1/26, 3/16 US. Cl. 239-227 6 Claims ABSTRACT OF THEDISCLOSURE A dish-washing machine spray head having a cylindrical bodyarranged for rotary and oscillatory movement on which a pair ofoutwardly projecting tubular ducts are mounted. The head is providedwith another pair of ducts having axes which intersect above the head toform a sheet of washing liquid when pressure is applied.

The present invention relates to a dish-washing machine having a waterprojecting device in the form of a substantially cylindrical bodyprovided with a distribution chamber and an apertured head and arrangedfor rotary and oscillatory movement imparted to it by water pressure.

A water projecting device of this type is described in French patentspecification 1,321,499.

This device has the disadvantage that since the water projection isperformed solely from the center of the tub, some pieces to be washed,arranged at the corners or near the walls of the tub are beyond therange of the jets, so that they are not washed satisfactorily.

The present invention obviates this disadvantage and is characterized inthat at least one water outlet duct is associated with the wall of thedistribution chamber.

In an embodiment of the machine according to the invention the free endof the duct is at least partly closed, while the wall of this duct hasat least one aperture. It another embodiment the sum of the areas of theapertures provided in the wall is smaller than the surface of the crosssectional area of said duct.

In another embodiment of the dish-washing machine according to theinvention the free end of the duct is closed by a flat surface which isat an angle of about 60 to a cross sectional plane of the tube.

In still another embodiment of the invention a tube communicates with atleast one of said apertures provided in the wall of said duct and that across sectional plane of the tube is at an angle of about 80 with across sectional plane of the duct.

In an advantageous embodiment of the dish-washing machine according tothe invention, in which the wall of the distribution chamber iscylindrical, there are provided two ducts extending perpendicularly tosaid wall. Since the cross section of the distribution chamber iscircular, said two ducts communicate with two diametrically oppositeapertures provided in said wall.

The invention will now be described more fully with reference to theaccompanying drawing.

FIG. 1 is a sectional view of a water projection device for adish-washing machine according to the invention.

3,458,136 Patented July 29, 1969 ice FIG. 2 is a partial plan view ofthis water projection device.

The device according to the invention comprises mainly a nozzle 1, asupporting member 2 and a guide 3. The supporting member 2 is internallyprovided with a conical seat 4, by means of which it bears on a pipe 5,which is traversed by the high-pressure washing liquid. The supportingmember 2 is provided with a collar 7, which partially covers the supplypipe 5 and with which is connected a shoulder 8, which projects to theoutside and is in contact with the inner face of the guide 3 and rollsalong said face when the washing liquid is supplied under pressure. Thisliquid passes through the supply pipe 5, arrives in the distributionchamber 9 and emerges partly through the ducts 10 of the nozzle 1-theseducts being disposed so that they impart a rotary and oscillatorymovement to the deviceand partly through the ducts 18, the axes of whichcoincide, so that the jets are transformed into a liquid sheet. Thepressure energy of this sheet exerted on the dishes arranged directlyabove the device is lower than the force which would be exerted by thedirect jets.

According to the invention the wall 11 of the distribution chamber 9 hassecured to it two tubes 12 and 13, one of the ends of which is closed bya plate 14. It is preferred for the plate 14 to be at an angle of about30 to the cross sections of the tubes 12 and 13. The walls of the latterare provided with apertures 15. Two tubes 16 and 17 are welded to theperipheries of two openings 15. The axes of symmetry of the tubes 16 and17 are at an angle of about to the axes of symmetry of the tubes 12 and13.

What is claimed is:

1. A dish-washing machine spray head comprising a substantiallycylindrical body provided with a distribution chamber, means forming afluid inlet to said distribution chamber, said body having a first fluidoutlet communicating with said chamber and arranged for imparting rotaryand oscillatory movement to said body, said body having a pair of fluidoutlets communicating with said chamber and having axes intersectingabove the body for forming fluids flowing therethrough into a fluidsheet, and a tubular water outlet duct radiating outwardly from the wallof the distribution chamber.

2. A dish-washing machine as claimed in claim 1 wherein the free end ofthe tubular duct is at least partly closed, and wherein the wall of saidduct has at least one aperture.

3. A dish-washing machine as claimed in claim 2 wherein an end of theduct is closed by a flat surface which is at an angle of about 60 to across sectional plane of said duct.

4. A dish-washing machine as claimed in claim 3 wherein a tubecommunicates with at least one of said apertures provided in the wall ofsaid duct, and wherein a cross sectional plane of the tube is at anangle of about 80 with a cross sectional plane of the duct.

5. A dish-washing machine as claimed in claim 2 wherein the wall of thedistribution chamber is cylindrical and wherein the two tubular ductsare arranged perpendicularly to said wall.

6. A dish-washing machine as claimed in claim 5 wherein a cross sectionof the distribution chamber is circular and wherein said two tubularducts communicate 3 4 Y with two diametrically opposite openingsprovided in 3,348,775 10/1967 La Flame 239-227 said wall. 3,357,64412/1967 Penfield 239-231 References Cited UNITED STATES PATENTS2,541,695 2/1951 Gangewere 239231 X 5 2,918,220 12/1959 Crow 239231239231, 251 3,091,400 5/1963 Aubert 239251 X ALLEN N. KNOWLES, PrimaryExaminer US. Cl. X.R.

